Sounds great!
Black angus X Holstein is a highly sought after cross at market right now. Seems around 500-600 pounds is optimum weight for auction. They finish out bigger.
De-horn and castrate for the highest price. Check your area market to be sure that it's the same for your area. Most places are reporting the same.
Be sure to know why she's available if you decide to keep for breeding. She could be a freemartin.
Keep a high quality calf starter in front of them and a fine stem hay. Stick to milk base replacer and don't over feed. If you do these things they will grow well.
I just took a couple Holstein bottle calved to market this week and topped the Holstein sale prices with them. Couldn't tell they were bottle calves and they were nice and fleshy. Made good money on them

Shocked the buyer when I told him they were bottle calves.
Good luck! Don't be afraid to ask ?'s
